block 44, 45: ID Flashcards Preview

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Flashcards in block 44, 45: ID Deck (65)
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1

Who gets HIV screening?

15-65 regardless of risk factors

2

Preferred HIV screening test

4th generation assay
- confirmatory test: HIV-1/HIV-2 antibody differentiatio immunoassay
- HIV RNA if first test is negative

3

Why do we not routine screen for syphilis

false positives

4

do guidelines recommend screening asymptomatic patients for HSV

no

5

what are 3 things to look for in an HIV patient with CMV? What is the CD4 count below

CD less than 50
- retinitis
- esophagitis
- colitis

6

Diagnostic test for CMV colitis in HIV patient

colonoscopy with biopsy

7

clinical feature of HIV patient with cryptosporidium

chronic, profuse watery diarrhea

8

Malaria chemoprophylaxis in areas of high rate of chloroquine resistance

atovaquone-proguanil
Doxycycline
Mefloquine

9

Postexposure HIV prophylaxis treatment

3-drug antiretroviral therapy for 4 weeks
- prefer to start treatment in first few hours

10

Atypical community-acquired pneumonias with GI and central nervous system problems? what bug do I have

Legionnaries

11

how can staph. aureus cause lung problems

- IV drug user
- tricuspid endocarditis
- fragments of vegetation can embolize to lungs (cavitary lesions)

12

where is Chloroquine sensitive

Argentina
Mexico
Turkey
Iraq
Central America
Caribbean

13

What is Streptococcus gallolyticus ( S bovis biotype I) is associated with what

colonic neoplasms

14

In humans hepatic hydatid cysts are due to infection with?

Echinococcus granulosus

15

CT of c hepatic hydatid cyst shows

eggshell calcification

16

cutaneous blastomycosis manifests as ?

well- circumscribed verrucous nodules and plaques that progress to microabscesses

17

Patient with diabetes mellitus on INH (isoniazid) is at what risk

pyridoxine deficiency: get peripheral neuropathy

18

Eikenella Corrodens? type of bacteria and where it is found

gram-negative anaerobe
normal human oral flora

19

Enterococi are a common cause of endocarditis associated with

nosocomial urinary tract infection

20

when is 13-valent pneumococcal conjugate vaccine recommended

all adults 65 and older followed later by 23-valent pneumococcal polysaccharide vaccine

21

when is 23-valent pneumococcal polysaccharide vaccine recommended

- less than 65
- smoker, chronic medical condition, heart/lung disease, diabetes, chronic liver disease

22

what vaccine is given every 10 years

Td vaccine

23

when is Tdap given

one-time dose in place of Td for adults

24

when do you usually test for HSV

with patient has active symptoms

25

Difference between janeway lesions and osler nodes

Janeway: vascular, nontender
Osler: Immunologic, painful

26

Laboratory studies for infective endocarditis

normocytic anemia
increase ESR

27

adult still disease

- high fevers
- arthritis/arthralgias
- salmon-colored macular rash

28

when is PPD test considered positive in an HIV-infected patient

induration is greater than or equal to 5mm

29

how are HIV patients with no manifestations of active TB treated for latent TB?

Isoniazid and pyridoxine

30

how is Babesiosis diagnosed

peripheral blood smear
"Maltese cross"